c
typedef enum {
  JCS_GRAYSCALE,
  JCS_RGB,
  JCS_CMYK,
  JCS_YCCK,
  JCS_RGB565, 
  // ... other valid color spaces
} JCS_ColorSpace;

static int jinit_write_bmp(j_decompress_ptr cinfo, boolean is_os2, ...) {
  // ...
  if (cinfo->out_color_space == JCS_GRAYSCALE) {
    // ...
  } else if (IsExtRGB(cinfo->out_color_space)) {
    // ...
  } else if (cinfo->out_color_space >= JCS_RGB565 && 
    cinfo->out_color_space <= JCS_YCCK) { // Check for valid color spaces
    // ...
  } else {
    // Handle invalid color space
    return -1; // Or handle the error appropriately
  }
  // ...
}
